Question

what was upton sinclairs main purpose in writing the jungle?
to promote the socialist views that he adopted as an adult
to explain why journalists had an obligation to tell the truth
to arouse public sympathy for slaughterhouse workers
to prompt congress to pass food - safety laws

Explanation:

Upton Sinclair wrote The Jungle primarily to promote his socialist views. While the novel's exposure of unsanitary conditions in the meatpacking industry led to food - safety reforms (like the Pure Food and Drug Act and the Meat Inspection Act), Sinclair's main intent was to advocate for socialism by showing the exploitation of workers in the capitalist system. The other options: explaining journalists' obligation to tell the truth is not related to the novel's purpose; arousing sympathy for slaughterhouse workers was a means to his end of promoting socialism, not the main purpose; and prompting Congress to pass food - safety laws was an unintended consequence of the public outcry over the novel's revelations about food safety, not his main purpose.

Answer:

A. to promote the socialist views that he adopted as an adult